Answer
In the geometry of graphs, a point is called a vertex. A line segment or curve that starts and ends at a point is called an edge. A set of points connected by line segments or curves is called a -graph.
Work Step by Step
Swiss mathematician Leonhard Euler introduced a new type of geometry to design city streets, analyze traffic patterns and discover the most effective routes for public transportation known as Graph Theory. According to the graph theory, a point is called a vertex. A line segment or curve that starts and ends at a point is called an edge. A set of points connected by line segments or curves is called a ¬graph.